Implemented file upload functionality in the application

[srikeerthireddy]

@CodiumAI-Agent /review

[CodiumAI-Agent]

PR Review 🔍

⏱️ Estimated effort to review [1-5]	4, due to the integration of new file upload functionality which involves changes across multiple files including backend and frontend. The complexity of handling file uploads securely and efficiently requires careful review of the implementation details and error handling.
🧪 Relevant tests	No
⚡ Possible issues	Possible Bug: The file upload directory 'uploads/' is hardcoded in the multer storage configuration. This could lead to issues if the directory structure changes or if the application is deployed in a different environment.
	Security Concern: There is no file validation in the multer configuration, which could allow users to upload potentially dangerous files, such as executable scripts or files with harmful content.
🔒 Security concerns	No explicit security vulnerabilities related to sensitive information exposure or SQL injection are introduced in this PR. However, the lack of file type and size validation can be considered a security concern as it might allow the upload of malicious files.

Code feedback:

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relevant file	Back-End/User/userRoutes.js
suggestion	Consider adding file type and size validation in the multer configuration to prevent the upload of potentially dangerous files. This can be done by adding a `fileFilter` and `limits` option to the multer configuration. [important]
relevant line	const upload = multer({ storage: storage });

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relevant file	Back-End/User/userRoutes.js
suggestion	Instead of hardcoding the uploads directory in the multer storage configuration, consider using an environment variable or configuration file to manage paths. This enhances flexibility and maintainability, especially in different deployment environments. [important]
relevant line	cb(null, 'uploads/'); // Uploads directory

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